/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
* add the following below this CDDL HEADER, with the fields enclosed
* by brackets "[]" replaced with your own identifying information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*
* Copyright 2008 Sun Microsystems, Inc.
*/
package org.opends.guitools.controlpanel.util;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.opends.guitools.controlpanel.event.PrintStreamListener;
/**
* This class is used to notify the ProgressUpdateListeners of events
* that are written to the standard streams.
*/
public class ApplicationPrintStream extends PrintStream
{
private ArrayList<PrintStreamListener> listeners =
new ArrayList<PrintStreamListener>();
private static final Logger LOG =
Logger.getLogger(ApplicationPrintStream.class.getName());
private boolean notifyListeners = true;
/**
* Default constructor.
*
*/
public ApplicationPrintStream()
{
super(new ByteArrayOutputStream(), true);
}
/**
* {@inheritDoc}
*/
@Override
public void println(String msg)
{
notifyListenersNewLine(msg);
LOG.log(Level.INFO, msg);
}
/**
* {@inheritDoc}
*/
@Override
public void write(byte[] b, int off, int len)
{
if (b == null)
{
throw new NullPointerException("b is null");
}
if (off + len > b.length)
{
throw new IndexOutOfBoundsException(
"len + off are bigger than the length of the byte array");
}
println(new String(b, off, len));
}
/**
* Adds a print stream listener.
* @param listener the listener.
*/
public void addListener(PrintStreamListener listener)
{
listeners.add(listener);
}
/**
* Removes a print stream listener.
* @param listener the listener.
*/
public void removeListener(PrintStreamListener listener)
{
listeners.remove(listener);
}
private void notifyListenersNewLine(String msg)
{
if (notifyListeners)
{
for (PrintStreamListener listener : listeners)
{
listener.newLine(msg);
}
}
}
/**
* Sets whether the listeners must be notified or not.
* @param notifyListeners whether the listeners must be notified or not.
*/
public void setNotifyListeners(boolean notifyListeners)
{
this.notifyListeners = notifyListeners;
}
}